Quick-break switch.



P. SORENSEN.

QUICK BREAK SWITCH. APPLICATION FILE-D JUNE 26, 1914.

Patented Feb. 8,1916.

- circuit by means of a switch comprising a- 2 and by the grooves 4H PETER SORENS'EN, OF NEW YORK. N. Y.

QUICK-B31351; SWITCH.

Specification of Letters Patent. Patanted Feb. 8, 1916.

Application filed June as, 1914. Serial in. states.

To all whom it may concern:

Be it known that 1, PETER Sonnnsnn, a citizen of the United States, and resident of the city of New York, borough of Brooklyn,

county of Kings, and State of New York,

efiect the quick opening and, incidentally,

the quick closing action of the electrical minimum number of parts, all of which are constructed with a view to economyin manufact r ,3 .1

The invention is illustrated by the accompanying drawings in which- Figure 1 is a top view of the switch in the closed position with the supporting stud, stationary contacts, insulating base and metallic shell in section. Fig. 2 is a similar Viewv of the switch in the open position;

3 is a side view of the switch in the open position with the insulating base, metallic shell and insulating bushing in section.

In the several figures similar parts are indicated by similar characters. The base -1 made of porcelain or other suitable insulation, carries the central stud 2 to which all of the moving parts of the switch are attached- The moving contact 3- has up turned ears at either end on which bear the stationary contacts -4-- and i* when the switch is ciosed, as shown in Fig. 1. Secured to the center of moving contact 3- is a sleeve -5-- which forms a bearing fitting the stud 2- so that the moving contact may oscillate freely on the stud. A slotted spring washer 5 fitting in a groove in the-lower end, of the stud 2- holds the moving contact on the stud. A helical spring -6- surrounds the sleeve 5- and its ends bear on opposite sides of the pin 'z'- secured to the moving contact -3.

The slide bar is provided with push buttons at either end for operating it and has a central slot through which the stud --2- projects. It is guided by the stud and 1 half round in cross section, fitting the push buttons. The slide bar'has formed on it an ear 8" and a finger --8 A metallic casing or shell -9--, which is shown approximately spherical in form,

incloses the switch and has holes diametrically opposite in its sides through which the push buttons project. An insulating bushing 9"- is screwed into i the ring --9*-'- set in a hole in the top or the shell +9. The twin-conductors leading'frcm the switch terminals -P- (one of which is shown in Figs-Q 'passthrough the insulating bushing.

With the switch in the closed position, as shown'in Fig. 1, the quick break opening is ei'ected by pressing on the push button on the right-hand end ofthe slide-bar 8-. The ear --8 passes under the right-hand end of the. segmental flange -3- formed on the moving contact -3' and presses the finger "8 against the left-hand end of the spring -6- putting the spring under tension. s the right-hand end of the spring -6 bears on the pin -7-- it exerts a turning. effort on the moving contact 3.

The movement of the contact -3 is, however, prevented for the moment by the engagement of the 'flange -3 with the ear -8. As the movement of the slide bar is continued the tension of the spring 6-- is increased to the maximum in the position of the parts indicated by dot-and-dash lines in Fig. l. A slight further movement allows the flange -3 to pass by the right-hand end of the ear -8 permitting the spring 6' to snap the moving contact 3 from the closed position shown in Fig. l to the open position shown in Fig. 2. The

ing in contact with the finger -8.

With the switch in the open position as shown in Fig. 2 the switch is thrown to the closed position by pressing on the left h'and f push button and it will be observedlthatthe action is similar to that above descpibed for.

the opening of the switch. Tens on is put on the spring 6 from its righ hand end and the top of the flange 3 comes in contact with. the lower side of the ear 8"*- while the spring tension is being increased,

the switch closing with a quick action when the left-hand end of the ear -8 clears the flange -3 It will lostmotion is allowed between the flange 3'-- and the ear 8**- This lost motion insures the positiyeengage be observed that a small amount of play or also between the finger -8 and the opposite ends of the spring -6-.

mm'enient is stopped by the pin -7- comment and disengagement of the fiange+3 switch are so fitted together that it is impossible for any of them, to become displaced. The quick action in both opening and closing is positive and .nodelicate adjustment is required for accomplishing it, because of the lost motion between the parts Which are pointed out above,

What I claim is: v

An electrical switch comprising, in combination, a pair of fixed contacts, an insulating base, a stud mounted on said ease an Gopios of. this Q't'taflfl. may he email-see for five cents each, by aedressiag the temmissieae of! Esta-ate oscillatory contact having an angular flange by means of which the movement thereol: is

controlled, a sprlng, a slide bar provided with a projecting portion adapted to engage said flange on said oscillatory contact dur mg the first period of its movement and also -provided with a second projection adapted to. engage and set said spring in itsoperative position and to hold said oscillatory contact during said operation and on further movement to release said contact, permittinv said spring to operate the same, and a part upon said oscillatory contact adapted to engage 

